Bar support and spacer



Feb. 10, 1942. w AwBREY 2,272,761

BAR SUPPORT AND SPACER Filed June 26, 1959 ATTORNEYS.

Patented Feb. 10, 1942 4 Claims.

This invention relates to improvements in a bar support and spacer ofwhich the following is a specification.

The principal object of this invention is the provision of a bar supportand spacer wherein a ridge wire, chair, and tie-wir are welded togetherat a common point.

Another object of the present invention is the provision of a barsupport and spacer having an elongated ridge member, corrugated atspaced apart intervals, to receive reinforcing bars, a chair positionedbeneath each of said corrugations, and a tie-wire secured intermediateits ends between said ridge member and the respective chairs whereby thebars are secured in their respective corrugations.

Other objects are simplicity and economy of construction, ease andrapidity of operation, and adaptability to nesting together forshipment.

Reference will now be had to the drawing wherein:

Figure 1 is a perspective view of a bar support and spacer embodyingthis invention.

Fig. 2 is a sectional view taken on line II-II of Fig. 1.

Fig, 3 is a sectional view taken on line III-III of Fig, 2.

Fig. 4 is a view of the parts spaced apart prior to the weldingoperation.

Fig. 5 is a fragmentary side view of the device in the normal position.

Fig. 6 is a perspective view of a plurality of rod support and spacermembers, shown in position as used with astirrup assembly.

Fig, '7 is a perspective view of a modified form of the device, whereinthe ridge wire is straight throughout its length; and

Fig. 8 is a cross sectional view of the modified support and spacer witha reinforcing bar shown in position thereon.

Throughout the several views, like reference characters designatesimilar parts, and the numeral I0 is an elongated ridge wire havingspaced apart depressions or corrugations I 2. The corrugations areformed to receive a reinforcing bar [4 which can be spaced to meet therequirements of the builders specification.

A chair IE is welded to ridge wire Ill beneath each corrugation I2, thuspresenting a very rigid support of the reinforcing rod at a properlyspaced distance from the form boards on which the support and spacerrests. This chair is shown with a short leg l8 and a long leg 20, eachhaving a foot 22 disposed substantially parallel with the formsupporting surface. Chairs it are preferably rigidly secured to theridge wire in by welding.

It is very evident that the straight wire portion 24, joining thecorrugations, is raised above the surface of the form a distance asgreat, if not greater, than the distance between the reinforcing bar andthe adjacent form Wall, so that coarse gravel in the concrete aggregatebeing used, can pass thereunder during the pouring operation, thuseliminating to a large degree, the formation of objectionable voids orpockets.

A tie-wire 26 is securely fixed atits middle portion 28 between ridgewire l0 and chair Hi to present two arms 30, which are adapted to extendabout the reinforcing rod I4 and be secured together at 32 by twistingor interengaging by bending. It will be noted that the normal positionof arms 30 is in spaced apart, parallel relation to the ridge wire, thusmaking the assembly compact and the arms easily accessible during theassembling of the parts.

Referring to Fig. 4, the ridge wire is shown transversely grooved at 34,to receive tie-wire 26. The parts are moved together and a welding heatapplied, whereby the ridge wire, chair and tie-wire are secured in fixedrelative relation. When the parts are so positioned during the weldingoperation, the tie-wire is not burned in two, as might result if nogroove was provided. The chair might be notched to receive the tiewirewithout departing from the spirit of the invention.

It will be observed that in Fig. 6, the support and spacer is shown asused for supporting stirrups in a concrete beam construction. In thisassembly, the support and spacer A is positioned to rest on the bottomform board D, to receive the central portion of the stirrup S, thussupporting the stirrup and the reinforcing bars above said form board apredetermined distance.

When the support and spacer members B and C are used to space thestirrups apart from the respective side walls of the form, chairs l6 aresecured to the side form members by means of staples 3B. The stirrupsare usually spaced apart at varying distances, thus making it essentialthat the corrugations in the various ridge wires, be similarly spaced tomaintain the stirrups in spaced apart parallel relation, perpendicularto the floor plane.

It is apparent that when the stirrups are thus joined together, there isproduced a resultant reinforcing assembly that will maintain theassociated parts in fixed relative relation during the pouringoperation, and the support and spacing member will also serve asreinforcing members when the concrete structure is complete.

When the ridge member 31 is used as shown. in Figs. '7 and 8, thereinforcing bars are secured in proper spaced apart relation by means ofthe tiewires 30. In this structure it will be noted that the ridge wireextends below the reinforcing bars throughout their lengths. This typeof ridge wire may be used when the chairs are sufiiciently high topermit of free flow of aggregate between the form and the ridge wire.

Various slight variations might be made in the structure withoutdeparting from the spirit of the invention.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent is:

1. A bar support and spacer comprising an elongated wire membercorrugated at spaced apart intervals; a chair welded to said wirebeneath certain of said corrugations to present a transversely disposedhole therebetween; and a tie-wire at each chair passing through saidhole and secured between said chair and said elongated wire, adapted tobe secured about a bar positioned in the adjacent corrugations, wherebythe bar is secured against movement longitudinally of said elongatedmember.

2. A bar support and spacer comprising an elongated, ridge member havingunequally spaced apart depressions with a transverse notch formed in theunderside of said ridge member at the lowest point of each of saiddepressions; two legged chairs secured transversely to said ridge memberbelow each of said depressions respectively to cover the notchestherein; and a tiewire at each chair positioned in the notch formed insaid ridge member and secured between the respective chairs and theadjacent depression, whereby a bar may be securely anchored in each ofsaid depressions.

3. A bar support and spacer comprising an elongated wire having spacedapart transverse recesses formed along one of its sides, a chair weldedto said elongated wire at each of said recesses whereby openings areformed between said wire and chairs and tie wires respectively, passingthrough each of said openings and adapted to be secured about barspositioned on said elongated wire directly above said chairs whereby thebars are secured against longitudinal movement relative to saidlongitudinal wire.

4. A bar support and spacer comprising an elongated wire member havingspaced apart depressions formed in its underside, a chair having twolegs weld-ed to the underside of said wire at one of said depressions toform an opening therebetween, and a tie wire secured intermediate itsends in the opening formed between said chair and elongated wire.

-WILLIAM POWELL AWBREY.

